Poster A129, Saturday, March 25, 5:00 – 7:00 pm, Pacific Concourse
The concreteness effect from memory illusions’ perspective: The HA-DIM Effect
Alejandro Marin-Gutierrez1, Emiliano Diez Villoria2, Angel Fernandez Ramos2; 1Universidad de La Sabana, 2Universidad de Salamanca- INICO
For quite often, researches have observed that concrete nouns are processed faster and more accurately than abstract nouns in a variety of cognitive tasks. This effect has been known as the Concreteness Effect, and its explanation has led to the assumption that there might be differences in the representation of concrete and abstract concepts in our conceptual system. Although the nature of these differences is still matter of controversy, some researchers have proposed that concrete and abstract concepts are organized according to qualitatively different organizational principles, where the organization of concrete concepts follows a semantic similarity principle whereas association with other concepts is what primarily organizes abstract concepts’ representations. In order to test these assumptions, we have used the DRM paradigm, where association seems to play a fundamental role in the production of false memories. Thus, our main goal was to test the impact of association in creating concrete and abstract false memories, both behaviorally and also using ERPs. In two experiments, participants studied lists of words highly or weakly associated to a critical word (also known as critical lure) that was either abstract or concrete and, subsequently, participants took a recognition test. Results showed that false recognition rates were higher for abstract lures that were highly associated to their corresponding lists. ERPs replicated the behavioral data and showed an early N400 interaction effect that mirrored the behavioral results. This High Abstract Difference Illusory Memory (HA-DIM effect) is discussed in terms of Activation/Associative theories.
Topic Area: LONG-TERM MEMORY: Semantic